[Bug 73619] XServer frequently freezes for a few seconds

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Tue Mar 18 04:53:05 PDT 2014


https://bugs.freedesktop.org/show_bug.cgi?id=73619

--- Comment #4 from Alexander Richardson <arichardson.kde at gmail.com> ---
I recently had another freeze and was able to attach gdb via ssh, this is the
backtrace I got:

Thread 2 (Thread 0x7fca267f1980 (LWP 868)):
#0  0x00007fca247161e7 in ioctl () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1  0x00007fca257e1da4 in drmIoctl (fd=10, request=request at entry=3223348317,
arg=arg at entry=0x7fff56fbe6b0) at xf86drm.c:167
        ret = <optimized out>
#2  0x00007fca257e414f in drmCommandWriteRead (fd=<optimized out>,
drmCommandIndex=drmCommandIndex at entry=29, data=data at entry=0x7fff56fbe6b0,
size=size at entry=32) at xf86drm.c:2451
        request = 3223348317
#3  0x00007fca1ff12463 in bo_open (bom=0x1ba44e0, handle=0, size=121397248,
alignment=512, domains=4, flags=0) at radeon_bo_gem.c:108
        args = {
          size = 121397248, 
          alignment = 512, 
          handle = 1737, 
          initial_domain = 4, 
          flags = 0
        }
        bo = 0x2a4f140
        r = <optimized out>
#4  0x00007fca20169e08 in radeon_alloc_pixmap_bo (pScrn=pScrn at entry=0x1b9aca0,
width=width at entry=3648, height=height at entry=8172, depth=depth at entry=32,
usage_hint=usage_hint at entry=0, bitsPerPixel=bitsPerPixel at entry=32,
new_pitch=new_pitch at entry=0x7fff56fbf55c,
new_surface=new_surface at entry=0x2ae6600, new_tiling=new_tiling at entry=0x2ae65f8)
at radeon_bo_helper.c:179
        info = 0x1b9b3d0
        pitch = 14848
        base_align = <optimized out>
        size = <optimized out>
        heighta = <optimized out>
        cpp = 4
        tiling = 0
        surface = {
          npix_x = 3648, 
          npix_y = 8176, 
          npix_z = 1, 
          blk_w = 1, 
          blk_h = 1, 
          blk_d = 1, 
          array_size = 1, 
          last_level = 0, 
          bpe = 4, 
          nsamples = 1, 
          flags = 1114113, 
          bo_size = 121397248, 
          bo_alignment = 512, 
          bankw = 0, 
          bankh = 0, 
          mtilea = 0, 
          tile_split = 0, 
          stencil_tile_split = 0, 
          stencil_offset = 0, 
          level = {{
              offset = 0, 
              slice_size = 121397248, 
              npix_x = 3648, 
              npix_y = 8176, 
              npix_z = 1, 
              nblk_x = 3712, 
              nblk_y = 8176, 
              nblk_z = 1, 
              pitch_bytes = 14848, 
              mode = 0
            }, {
              offset = 0, 
              slice_size = 0, 
              npix_x = 0, 
              npix_y = 0, 
              npix_z = 0, 
              nblk_x = 0, 
              nblk_y = 0, 
              nblk_z = 0, 
              pitch_bytes = 0, 
              mode = 0
            } <repeats 31 times>}, 
          stencil_level = {{
              offset = 0, 
              slice_size = 0, 
              npix_x = 0, 
              npix_y = 0, 
              npix_z = 0, 
              nblk_x = 0, 
              nblk_y = 0, 
              nblk_z = 0, 
              pitch_bytes = 0, 
              mode = 0
            } <repeats 32 times>}, 
          tiling_index = {0 <repeats 32 times>}, 
          stencil_tiling_index = {0 <repeats 32 times>}
        }
        bo = <optimized out>
        domain = 4
#5  0x00007fca2013c527 in RADEONEXACreatePixmap2 (pScreen=<optimized out>,
width=3648, height=8172, depth=32, usage_hint=0, bitsPerPixel=32,
new_pitch=0x7fff56fbf55c) at radeon_exa.c:289
        pScrn = 0x1b9aca0
        info = <optimized out>
        new_priv = 0x2ae65f0
#6  0x00007fca1fd00068 in exaCreateDriverPixmap_mixed (pPixmap=0x2da61c0) at
exa_migration_mixed.c:61
        new_pitch = 0
        pScreen = 0x1ba3b20
        w = <optimized out>
        h = 8172
        depth = <optimized out>
        bpp = <optimized out>
        usage_hint = 0
        paddedWidth = 14592
#7  0x00007fca1fd002b0 in exaDoMigration_mixed (pixmaps=0x7fff56fbf660,
npixmaps=-1071618979, can_accel=535884672) at exa_migration_mixed.c:104
        pPixmap = 0x2da61c0
#8  0x00007fca1fd00dd4 in exaDoPutImage (depth=32, src_stride=14592,
bits=0x36b7dc8 "", format=2, h=17, w=3648, y=0, x=0, pGC=0x20cc090,
pDrawable=0x2da61c0) at exa_accel.c:179
        pixmaps = {{
            as_dst = 1, 
            as_src = 0, 
            pPix = 0x2da61c0, 
            pReg = 0x58
          }}
        nbox = <optimized out>
        pPix = <optimized out>
        xoff = 0
        ret = 1
        pClip = <optimized out>
        pbox = <optimized out>
        yoff = 1
        bpp = 32
#9  exaPutImage (pDrawable=0x2da61c0, pGC=0x20cc090, depth=32, x=0, y=0,
w=3648, h=17, leftPad=0, format=2, bits=0x36b7dc8 "") at exa_accel.c:233
No locals.
#10 0x0000000000519819 in damagePutImage (pDrawable=0x2da61c0, pGC=0x20cc090,
depth=32, x=0, y=0, w=<optimized out>, h=17, leftPad=0, format=2,
pImage=0x36b7dc8 "") at damage.c:736
        oldFuncs = 0x8162c0 <damageGCFuncs>
#11 0x000000000043a189 in ProcPutImage (client=0x2a4d3f0) at dispatch.c:1968
        pGC = 0x20cc090
        pDraw = 0x2da61c0
        length = <optimized out>
        lengthProto = <optimized out>
        tmpImage = 0x36b7dc8 ""
        stuff = 0x36b7db0
#12 0x000000000043d23e in Dispatch () at dispatch.c:433
        clientReady = 0x1f600c0
        result = <optimized out>
        client = 0x2a4d3f0
        nready = 0
        icheck = 0x820590 <checkForInput>
        start_tick = 178795
#13 0x000000000044106a in dix_main (argc=8, argv=0x7fff56fbf948,
envp=<optimized out>) at main.c:294
        i = <optimized out>
        alwaysCheckForInput = {0, 1}
#14 0x00007fca24657be5 in __libc_start_main (main=0x42c5d0 <main>, argc=8,
argv=0x7fff56fbf948, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7fff56fbf938) at libc-start.c:269
        result = <optimized out>
        unwind_buf = {
          cancel_jmp_buf = {{
              jmp_buf = {0, -524547331697071748, 4376024, 140734652741952, 0,
0, 524320866477091196, 516830052716587388}, 
              mask_was_saved = 0
            }}, 
          priv = {
            pad = {0x0, 0x0, 0x59b9b0 <__libc_csu_init>, 0x7fff56fbf948}, 
            data = {
              prev = 0x0, 
              cleanup = 0x0, 
              canceltype = 5880240
            }
          }
        }
        not_first_call = <optimized out>
#15 0x000000000042c601 in _start () at ../sysdeps/x86_64/start.S:122
No locals.

Thread 1 (Thread 0x7fca19dfe700 (LWP 883)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
No locals.
#1  0x00007fca1f515ec3 in ?? () from /usr/lib64/dri/r600_dri.so
No symbol table info available.
#2  0x00007fca1f515807 in ?? () from /usr/lib64/dri/r600_dri.so
No symbol table info available.
#3  0x00007fca259f20db in start_thread (arg=0x7fca19dfe700) at
pthread_create.c:309
        __res = <optimized out>
        pd = 0x7fca19dfe700
        now = <optimized out>
        unwind_buf = {
          cancel_jmp_buf = {{
              jmp_buf = {140505994225408, -524547331697071748, 0,
140506206253056, 140506085630131, 140505994225408, 516890606489905532,
516829586942404988}, 
              mask_was_saved = 0
            }}, 
          priv = {
            pad = {0x0, 0x0, 0x0, 0x0}, 
            data = {
              prev = 0x0, 
              cleanup = 0x0, 
              canceltype = 0
            }
          }
        }
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#4  0x00007fca2471d90d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:111
No locals.



Looks like it is somehow freezing when calling the DRM_RADEON_GEM_CREATE ioctl,
but maybe gdb attaching causes the freeze to end and this is just afterwards.
Hope it is of some use.

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